<!DOCTYPE html>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html; charset=UTF-8"  %>
<%
	String basePath = request.getScheme()
			+ "://"
			+ request.getServerName()
			+ ":"
			+ request.getServerPort()
			+ request.getContextPath()
			+ "/";
%>
<!--写 base 标签，永远固定相对路径跳转的结果-->
<base href="<%=basePath%>">

<html>
<head>
<meta charset="UTF-8">
<title>购物车</title>
<base href="http://localhost:8080/BookStore02/">
<link type="text/css" rel="stylesheet" href="static/css/style.css" >
	<base href="<%=basePath%>">
</head>
<body>
	
	<div id="header">
			
			<span class="wel_word">购物车</span>
			<div>
				<span>欢迎<span class="um_span">韩总</span>光临叮叮书城</span>
				<a href="pages/order/order.jsp">我的订单</a>
				<a href="index.jsp">注销</a>&nbsp;&nbsp;
				<a href="index.jsp">返回</a>
			</div>
	</div>
	
	<div id="main">
	
		<table>
			<tr>
				<td>商品名称</td>
				<td>数量</td>
				<td>单价</td>
				<td>金额</td>
				<td>操作</td>
			</tr>
			<c:if test="${empty sessionScope.cart.items}">
				<%--如果购物车空的情况--%>
				<tr>
					<td colspan="5"><a href="index.jsp">亲，当前购物车为空！快跟小伙伴们去浏览商品吧！！！</a>
					</td>
				</tr>
			</c:if>
			<c:if test="${not empty sessionScope.cart.items}">
				<%--如果购物车非空的情况--%>
				<c:forEach items="${sessionScope.cart.items}" var="entry">
					<tr>
						<td>${entry.value.name}</td>
						<td>
							<input class="updateCount" style="width: 80px"
								bookId="${entry.value.id}"
								type="text" value="${entry.value.count}"
							>
						</td>
						<td>${entry.value.price}</td>
						<td>${entry.value.totalPrice}</td>
						<td><a class="deleteItem" href="carServlet?action=deleteItem&id=${entry.value.id}">删除</a></td>
					</tr>
				</c:forEach>
			</c:if>
			
		</table>
		<c:if test="${not empty sessionScope.cart.items}">
		<div class="cart_info">
			<span class="cart_span">购物车中共有<span class="b_count">${sessionScope.cart.totalCount}</span>件商品</span>
			<span class="cart_span">总金额<span class="b_price">>${sessionScope.cart.totalPrice}</span>元</span>
			<span class="cart_span"><a id="clearCart" href="carServlet?action=clear">清空购物车</a></span>
			<span class="cart_span"><a href="orderServlet?action=createOrder">去结账</a></span>
		</div>
		</c:if>
	</div>
	
	<div id="bottom">
		<span>
			叮叮书城.Copyright &copy;2015
		</span>
	</div>
</body>
<script type="text/javascript">
	$(function () {
// 给 【删除】绑定单击事件
		$("a.deleteItem").click(function () {
			return confirm("你确定要删除【" + $(this).parent().parent().find("td:first").text() +"】吗?")
		});
	});
	// 给清空购物车绑定单击事件
	$("#clearCart").click(function () {
		return confirm("你确定要清空购物车吗?");
	})

// 给输入框绑定 onchange 内容发生改变事件
	$(".updateCount").change(function () {
// 获取商品名称
		var name = $(this).parent().parent().find("td:first").text();
		var id = $(this).attr('bookId');
// 获取商品数量
		var count = this.value;
		if ( confirm("你确定要将【" + name + "】商品修改数量为：" + count + " 吗?") ) {
//发起请求。给服务器保存修改
			location.href =
					"http://localhost:8080/book/cartServlet?action=updateCount&count="+count+"&id="+id;
		} else {
// defaultValue 属性是表单项 Dom 对象的属性。它表示默认的 value 属性值。
			this.value = this.defaultValue;
		}
	});
</script>

</html>